Create ovpn file with "ca", "cert" and "key"
Additionally put all intermediate CAs (if any)
tagged as "extra-certs".
"tls-auth" "OpenVPN Static key V1" not supported (yet)
Extend export-test by OpenVPN test case
Fix logical error when exporting in PEM format.
The key export part was not reached...
The diff is much smaller when displayed with -b to skip
indentation-only changes....
Drop the unused "F_PLUSKEY" flag and fix the Template export
Collect all export formats in pki_export.
Each export format has assigned acouple of flags, indicating,
whether they are text, concatenateable, encrypted, usable for
multiple selections or only for a single item.
